Author(s): Lav Kumar Gupta; Ti Eldho

Linked Author(s): Lav Kumar Gupta

Keywords: Spur dikes; T-shaped; L-shaped; RANS; Numerical modeling; Flow fields; Scouring

Abstract: This paper investigated local scour and flow fields around three types of spur dikes; T-shaped, L-shaped, and rectangular. Three experiments and three simulations were conducted using dikes with a length of 20 cm under clear water and identical conditions. From the experiments, the T-shaped spur dike demonstrated a maximum scour reduction of 11% and 8% compared to the rectangular and L-shaped dikes, respectively. The study compared scour depths and sediment bed morphologies at equilibrium for the different spur dike shapes. Additionally, the vector flow fields, influence of velocity magnitude on structure and streamlines around the three types of spur dikes were studied using numerical simulation, showing that the T-shaped spur dike exhibits more streamlined flow, and a smaller core vortex compared to the others.

DOI: https://doi.org/10.64697/978-90-835589-7-4_41WC-P1989-cd

Year: 2025